Time relay (Time Relay) refers to a relay that the output circuit needs to generate a jump -type change (or contact actions) after adding (or removed) input input signals.It is an electrical element that is used to connect or cut off the circuit with higher voltage and larger current on a lower voltage or smaller current.
Time relay working principle
Time relays can be divided into two types: general -power delay type and power -off delay type.In terms of the principles of action, there are electronic, mechanical, etc.The electronic formula is to use the capacitor charging and discharge and then the principle of electronic components to achieve delayed action.There are many mechanical styles, with airbags that use airbags and spring.Time relay: When adding or removing the input signal, the output part needs to be delayed or limited to the specified time before closed or disconnected the relay of its controlled line.Used to accurately control a mechanical equipment or component products.
Types of time relay
1. Air damping time relay: Also known as airbag -type time relay, it is delayed based on the resistance generated by air compression. Its structure is simple, cheapThe accuracy is low.
2. Electromagnetic time relay: Short -lapse time (0.3 ~ 1.6s), but its structure is relatively simple, usually used in power -off delayed occasions and DC circuits.
3. Electric time relay: The principle is similar to the clock, it is delayed by the internal motor driven the deceleration gear rotation.This relay has a high delay accuracy and a wide delay range (0.4 ~ 72h), but the structure is relatively complicated and the price is very expensive.
4. Crystal tube time relay: Also known as electronic time relay, it uses a delayed circuit to delay.This relay is high and small.

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